With neat circuit diagram describe the principal,construction and working of a potentiometer.

With neat circuit diagram describe the principle, construction an dworking of meter bridge. Also determine the resistance of the wire.

with neat diagram describe the principal construction and working of a transformer.

With neat diagram describe the principle construction and working of a moving coil galvanometer.

with neat circuit diagram describe the construction and working of centretap full wave rectifier.

Describe the construction and working of Daniell cell.

With neat circüit diagram describe N-P-N transistor.

Discuss the construction and working of a dry cell.

Discuss the construction and working of a Carnot’s engine.